[RFC PATCH 1/2] rtc: rzn1: drop superfluous wday calculation

Wolfram Sang
2024-11-22T10:14:58Z

The week register simply counts from 0 to 6 where the numbers do not
even represent a specific weekday. So we can adopt 'tm_wday' numbering
of the RTC core without converting it.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/rtc/rtc-rzn1.c | 15 ---------------
1 file changed, 15 deletions(-)

diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c
index b0ea2847e982..4ae6e349faa0 100644
--- a/drivers/rtc/rtc-rzn1.c
+++ b/drivers/rtc/rtc-rzn1.c
@@ -75,19 +75,6 @@ static void rzn1_rtc_get_time_snapshot(struct rzn1_rtc *rtc, struct rtc_time *tm
tm->tm_year = readl(rtc->base + RZN1_RTC_YEARC);
}

-static unsigned int rzn1_rtc_tm_to_wday(struct rtc_time *tm)
-{
- time64_t time;
- unsigned int days;
- u32 secs;
-
- time = rtc_tm_to_time64(tm);
- days = div_s64_rem(time, 86400, &secs);
-
- /* day of the week, 1970-01-01 was a Thursday */
- return (days + 4) % 7;
-}
-
static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct rzn1_rtc *rtc = dev_get_drvdata(dev);
@@ -109,7 +96,6 @@ static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_sec = bcd2bin(tm->tm_sec);
tm->tm_min = bcd2bin(tm->tm_min);
tm->tm_hour = bcd2bin(tm->tm_hour);
- tm->tm_wday = bcd2bin(tm->tm_wday);
tm->tm_mday = bcd2bin(tm->tm_mday);
tm->tm_mon = bcd2bin(tm->tm_mon) - 1;
tm->tm_year = bcd2bin(tm->tm_year) + 100;
@@ -126,7 +112,6 @@ static int rzn1_rtc_set_time(struct device *dev, struct rtc_time *tm)
tm->tm_sec = bin2bcd(tm->tm_sec);
tm->tm_min = bin2bcd(tm->tm_min);
tm->tm_hour = bin2bcd(tm->tm_hour);
- tm->tm_wday = bin2bcd(rzn1_rtc_tm_to_wday(tm));
tm->tm_mday = bin2bcd(tm->tm_mday);
tm->tm_mon = bin2bcd(tm->tm_mon + 1);
tm->tm_year = bin2bcd(tm->tm_year - 100);
--
2.39.2